[SOLVED] PC Boots but no display/bios

[dnoloco]

My dad has a PC I built for him for work about 4 or so years ago. Opened it up to extend the ram from 16-32gb because we had the same exact ram as extra. Got the ram inside and got no display. Since then We have not been able to get to bios. We reset CMOS, swapped ram, tried only 1, 2 , 3, and all 4 ram sticks, tried different ram slots. Then I took the graphics card out and the cpu cooler and reseated both. Both looked good no heat damage or anything. As I did that I re plugged everything. Still the same problem, only bit of help im getting is a single led on the mobo that stays lit red the entire time.

Thinking the motherboard died, but we are really hoping not, seems so coincidental because I only touched the ram and next thing we know we can't get to bios.

Any help is appreciated.

 

[Calvin7]

Such memory combinations have no guarantee to be compatible together.

 

[geofelt]

Ram is sold in kits for a reason.
A motherboard must manage all the ram using the same specs of voltage, cas and speed.
The internal workings are designed for the capacity of the kit.
Ram from the same vendor and part number can be made up of differing manufacturing components over time.
Some motherboards, can be very sensitive to this.
This is more difficult when more sticks are involved.

So, it is not surprising that the upgrade did not work.

But, since you have tried the old ram as well as individual sticks, that does not explain your problem.
If you have, or can download the motherboard manual, find out which slot is preferred or required for using only one stick.
Then try each stick singly in that slot to see of you can get a good post.

The usual problem in inserting ram is to not get it in squarely or not seated properly.
It takes a fair amount of downward force to seat ram. If you are careless, you can damage the slot or the ram.
You objective is to find a good stick.
Another possibility is that the primary slot has been damaged. If no joy with the primary slot, repeat with another slot.

Did you, in this process, remove the cpu from the socket?
If so, you could have possibly damaged the socket which would explain all.
The processor must be simply dropped in.
If you smoosh it around to seat it, you will damage a socket pin.